What is the purpose of using expansion joints in piping systems?

Using expansion joints in piping systems primarily serves to absorb thermal changes that occur due to temperature variations. As the temperature of the fluid within the pipes changes, the pipe material expands and contracts. This movement can lead to stress in the piping system, potentially resulting in damage or misalignment. Expansion joints are strategically placed to accommodate these thermal expansions and contractions, ensuring that the system remains intact and functional despite the fluctuations in temperature.

While preventing leaks, allowing for easier installation, and minimizing noise are also relevant considerations in piping design, their primary function is not the main purpose of expansion joints. Preventing leaks is more closely related to the proper sealing of joints and fittings; easier installation might refer to other design elements or techniques, and minimizing noise can be addressed through insulation and sound dampening materials rather than expansion joints specifically. Thus, the correct focus is on the role of expansion joints in managing thermal changes within the system.